Help Chaines head unit Software flashing


Hi, i done many head units flashing by sp flash tool successfully but am facing problem now when a wrong rom loaded the head unit mtk base yt9216 not recognize by my laptop what to do now/


DON'T PANIC!!!!!!!!!
well i think you are sol. this what happens when you flash the wrong rom.....which are very device specific.

if you can find the stock firmware, you can try and flash that. or if you have twrp install you can try flashing the correct rom for your device.

never rooted a head unit so i can't help you with that.